Toyota's iQ from £9495
That makes it considerably more expensive than Toyota's other city car, the Aygo, which starts from £7000, rising to £8895 for the top-spec model.
The iQ us powered by a 67bhp 1.0-litre petrol engine, which averages 65.7mpg and emits 99g/km of carbon dioxide, and is available with a five-speed manual gearbox or an automatic unit.
The car is available in two trim levels, iQ and iQ2.
iQ has 15-inch alloy wheels, electrically adjustable door mirrors, air-conditioning and a six-speaker stereo with an auxiliary socket.
iQ2 has high-gloss alloys, front fog lamps, automatic headlights, rain-sensing wipers, an automatic entry and start system, and climate control.
Standard safety features include anti-lock brakes, stability control and traction control. Nine airbags are fitted, including rear window airbags, which are being fitted to a car for the first time.
Buyers who order an iQ before March 2009 will also get free metallic paint.